[PATCH] arm64: ARM Scalable Matrix Extension is ARMv9-A

[Mark Brown]

On Mon, May 09, 2022 at 03:40:30PM +0200, Geert Uytterhoeven wrote:
> The help text for the config option to enable support for the ARM
> Scalable Matrix Extension does not mention the specification baseline
> for this extension.  Make it clear this is an extension for the ARMv9-A
> architecture, so users know when it is safe to disable this option,
> which is enabled by default.

If this is important we should probably also do it for SVE, it was
introduced along with v8.2 but that's not called out in Kconfig.

> Fixes: a1f4ccd25cc25625 ("arm64/sme: Provide Kconfig for SME")

Fixes?
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